.per_item {
  margin-bottom:8px;
  .per_title {
    font-size:16px;
    margin-bottom:8px;
  }
  .per_sub_items {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    .per_sub_item {
      display: flex;
      justify-content: center;
      align-items: center;
      padding:5px 10px;
      cursor: pointer;
    }
  }
}